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dm: error return error for discards

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Have the error target respond to a discard request with a hard -EIO
rather than fail the request with -EOPNOTSUPP.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mike Snitzer
2010-08-12 04:14:14 +01:00
committed by Alasdair G Kergon
parent 3fd5d48027
commit 38e1b257fd
1 changed files with 5 additions and 0 deletions
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5
drivers/md/dm-target.c
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@ -113,6 +113,11 @@ void dm_unregister_target(struct target_type *tt)
*/ */
static int io_err_ctr(struct dm_target *tt, unsigned int argc, char **args) static int io_err_ctr(struct dm_target *tt, unsigned int argc, char **args)
{ {
/*
* Return error for discards instead of -EOPNOTSUPP
*/
tt->num_discard_requests = 1;
return 0; return 0;
} }